We look at the division of 312356 by 51 
Our goal is to divide 312356 by 51.

Step 1:
The number 51 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 51

Going ahead to step 2:
51 goes into 31 0 times with a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Fetch the next digit (2) from the dividend, attach it to 31 and continue: 312 / 51

Moving on to step 3:
51 can be fit into 312 6 times, resulting in a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 306 from 312 and we're left with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 51

On to step 4:
If we divide 63 by 51, we get 1 and a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 61.0
Deduct 51 from 63 and we're left with 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 51

On to step 5:
125 divided by 51 is 2 with a remainder of 23.
Use 2 as the next digit of our solution. 
Result so far: 612.0
Subtracting 102 from 125 leaves us with 23.
Grab the next digit (6) from the dividend, add it to 23, then carry on: 236 / 51

Step 6:
236 divided by 51 is 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 6124.0
Subtract 204 from 236 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 7:
The number 51 fits into 320 6 times, leaving a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 6124.6
Deduct 306 from 320 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
51 can be fit into 140 2 times, resulting in a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 6124.62
The remainder is 38 after subtracting 102 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 9:
380 divided by 51 is 7 with a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 6124.627
Deduct 357 from 380 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 10:
If we divide 230 by 51, we get 4 and a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 6124.6274
The remainder is 26 after subtracting 204 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 11:
51 can be fit into 260 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 6124.62745
If we subtract 255 from 260, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 12:
The number 51 fits into 50 0 times, leaving a remainder of 50.
The next digit of our result is 0. 
Result so far: 6124.62745
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 13:
If we divide 500 by 51, we get 9 and a remainder of 41.
Use 9 as the next digit of our solution. 
Result so far: 6124.6274509
If we take 459 away from 500, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 14:
When dividing 410 by 51, we get 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 6124.62745098
If we subtract 408 from 410, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 6124.62745098, with a leftover of 2e-09.